Stupid forum software…
Paradise will have about a limited number of the Siren v2 with blue leds at CEO this weekend so make sure to swing by their booth early before they are all gone.
Later this week I will post a write up of what you saw in @butteroj 's video but the Siren v2 allows you to switch modes by passing a magnet next to the joystick or connecting the Siren to an external button on your case such as the start button. It has the hardware required to double the functionality on the button so it continues to function as the start button but if held down it will change the mode on magenta (or put magenta into setup mode at power up).
I have more cables coming in later this week and have a just few of the prototype v2 Sirens left. Depending on the demand at CEO we may or may not take this product to production. The boards are rather complex, time consuming and expensive to build so after the last of the protoypes are gone there will be no more small volume runs. If you want a Siren and do not get one at CEO send me a pm and I will let you know if there are any remaining.